Question

Matematica ajuda aí pessoal por favor

Answer 1

$a=5\\b=3\\ \\ (a-b)^{2} =5^{2} -2.5.3+3^{2} =25-30+9=4\\ \\ a^{2} -b^{2} =(a+b)(a-b)=(5+3)(5-3)=8.2=16$

$a=6\\ b=0\\ \\ (a-b)^{2}=6^{2}-2.6.0 +0^{2} =36-0+0=36\\ \\ a^{2} -b^{2} =(6+0)(6-0)=36-0+0-0=36$

$a=3\\ b=-1\\ \\ (a-b)^{2}=[3+(-1)]^{2}=(3+1)^{2} =3^{2} +2.3.1+1^{2} =9+6+1=16\\ \\ a^{2} -b^{2} =3^{2} -(-1)^{2} =9-(+1)=9-1=8$

$a=-1\\ b=4\\ \\ (a-b)^{2} =(-1-4)^{2} =(-1-4)(-1-4)=1+4+4+16=25\\ \\ a^{2}- b^{2} =(-1)^{2} -4^{2} =1-16=-15$